Patents by Inventor Tsuyoshi SHIMADA

Tsuyoshi SHIMADA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240109331
    Abstract: Disclosed is a recording apparatus including a tank configured to store liquid to be supplied to a recording head that ejects the liquid, the tank including an inlet port for liquid injection; a cap unit including a shaft portion and a cap configured to turn about the shaft portion between a first position at which the cap caps the inlet port and a second position at which the cap does not cap the inlet port, the shaft portion being provided to a housing that encloses the tank; and a biasing unit configured to bias the cap unit in a direction to move the cap apart from the inlet port, wherein the cap unit does not move at the second position while being biased by the biasing unit.
    Type: Application
    Filed: September 28, 2023
    Publication date: April 4, 2024
    Inventors: TSUYOSHI SAEKI, HIDEAKI MATSUMURA, YURI MORI, KEN TAKENAGA, SHOTA ASADA, KOKI SHIMADA, DAIJU TAKEDA, HIROMASA TSUTSUMI, MINEYOSHI TOMIE
  • Publication number: 20240083175
    Abstract: A printing apparatus includes a support member configured to support a printhead that performs printing by discharging ink to a print medium, a connecting member including a connecting portion connected to an ink introduction portion of the printhead and through which the ink introduction portion communicates with an ink supply passage via the connecting portion, a rotation member configured to hold the connecting member such that a posture of the connecting member is changeable, and configured to be supported by the support member to be rotatable between a connecting position at which the ink introduction portion and the connecting portion are connected and a connection releasing position at which the ink introduction portion and the connecting portion are not connected, and a biasing portion configured to bias the connecting member to a first posture with respect to the rotation member.
    Type: Application
    Filed: April 26, 2023
    Publication date: March 14, 2024
    Inventors: HIROMASA TSUTSUMI, HIDEAKI MATSUMURA, TSUYOSHI SAEKI, YURI MORI, KOKI SHIMADA, SHOTA ASADA, KEN TAKENAGA, DAIJU TAKEDA, MINEYOSHI TOMIE
  • Publication number: 20230259044
    Abstract: The present disclosure provides an electrophotographic photosensitive member having excellent dispersibility of fluorine atom-containing resin particles, and excellent durability, with an occurrence of a ghost suppressed. In the electrophotographic photosensitive member having a surface layer, the surface layer includes a fluorine atom-containing resin particle, a binder material, a charge transport substance, and a polymer A having a specific structural unit, wherein the binder material is a thermoplastic resin, and a film thickness of the surface layer is 35 ?m or larger and 50 ?m or smaller.
    Type: Application
    Filed: January 30, 2023
    Publication date: August 17, 2023
    Inventors: HARUHIKO MITSUDA, RYOICHI TOKIMITSU, EILEEN TAKEUCHI, JUN OHIRA, Toshiyasu Shirasuna, IKUYO KUROIWA, TSUYOSHI SHIMADA, TAKANORI UENO, KENICHI IKARI
  • Publication number: 20230259047
    Abstract: Provided is an electrophotographic photosensitive member including a surface layer, wherein the surface layer contains a fluorine atom-containing resin particle, a binder material, and a polymer having specific structural units.
    Type: Application
    Filed: January 30, 2023
    Publication date: August 17, 2023
    Inventors: TOSHIYASU SHIRASUNA, JUN OHIRA, EILEEN TAKEUCHI, IKUYO KUROIWA, TSUYOSHI SHIMADA, TAKANORI UENO, KENICHI IKARI, HARUHIKO MITSUDA, RYOICHI TOKIMITSU
  • Publication number: 20230259048
    Abstract: The present disclosure provides an electrophotographic photosensitive member having a surface layer that is excellent in dispersibility of a fluorine atom-containing resin particle and suppresses a potential fluctuation at the time of repeated use. The electrophotographic photosensitive member having the surface layer, wherein the surface layer includes the fluorine atom-containing resin particle, a binder material, and a polymer A having a specific structural unit.
    Type: Application
    Filed: January 30, 2023
    Publication date: August 17, 2023
    Inventors: JUN OHIRA, TOSHIYASU SHIRASUNA, IKUYO KUROIWA, TSUYOSHI SHIMADA, TAKANORI UENO, KENICHI IKARI, HARUHIKO MITSUDA, RYOICHI TOKIMITSU, EILEEN TAKEUCHI
  • Publication number: 20230259045
    Abstract: Provided is an electrophotographic photosensitive member including a surface layer, which is excellent in dispersibility of fluorine atom-containing resin particles and is suppressed from causing a ghost image. Specifically, provided is an electrophotographic photosensitive member including a surface layer, wherein the surface layer contains a fluorine atom-containing resin particle, a binder material, and a polymer A having specific structural units.
    Type: Application
    Filed: January 19, 2023
    Publication date: August 17, 2023
    Inventors: Ryoichi Tokimitsu, Haruhiko Mitsuda, Jun Ohira, Toshiyasu Shirasuna, Ikuyo Kuroiwa, Tsuyoshi Shimada, Takanori Ueno, Kenichi Ikari, Eileen Takeuchi
  • Patent number: 11537188
    Abstract: A user can easily determine, before connecting, whether an electronic device is able to operate when connected to an interface circuit and whether power can be supplied. The interface circuit includes a controller, a connector for connecting to an electronic device, and a display. The controller displays an operation mode and a power supply mode supported by the interface circuit on the display with the electronic device not connected to the connector.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: December 27, 2022
    Assignee: NEC Platforms, Ltd.
    Inventors: Tsuyoshi Shimada, Takeo Miyajima, Hiromu Matsushima
  • Publication number: 20220113777
    Abstract: A user can easily determine, before connecting, whether an electronic device is able to operate when connected to an interface circuit and whether power can be supplied. The interface circuit includes a controller, a connector for connecting to an electronic device, and a display. The controller displays an operation mode and a power supply mode supported by the interface circuit on the display with the electronic device not connected to the connector.
    Type: Application
    Filed: December 6, 2019
    Publication date: April 14, 2022
    Applicant: NEC Platforms, Ltd.
    Inventors: Tsuyoshi SHIMADA, Takeo MIYAJ1MA, Hiromu MATSUSHIMA
  • Patent number: 11112706
    Abstract: Provided is an electrophotographic photosensitive member in which the generation of a positive ghost image is suppressed under a low-temperature and low-humidity environment, and the occurrence of cracking is suppressed under a high-temperature and high-humidity environment. Also provided are a process cartridge mounted with the electrophotographic photosensitive member, and an electrophotographic apparatus including the process cartridge. The electrophotographic photosensitive member of the present disclosure is characterized in that an undercoat layer contains aluminum oxide particles and titanium oxide particles at a specific mass ratio.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: September 7, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Eileen Takeuchi, Kumiko Takizawa, Ikuyo Kuroiwa, Tsuyoshi Shimada, Wataru Kitamura
  • Patent number: 11104235
    Abstract: According to one embodiment, there is provided a charging management system including a display controller configured to cause a display device to display a time slot which is settable as a new desired rental time slot of an electric vehicle, based on a charging time slot on an assumption that charging to the vehicle by a second charging device is performed, and a scheduling module configured to set the desired rental time slot as a time slot in which rental is possible, if the charging to the electric vehicle for enabling the rental is possible in the input desired rental time slot and the rental time slot in which the rental reservation has been made.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: August 31, 2021
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Solutions Corporation
    Inventors: Hiroyuki Suzuki, Tsuyoshi Shimada, Norikazu Hosaka, Naoki Yamaguchi, Motohiro Takeuchi, Kenji Kojima
  • Patent number: 10935898
    Abstract: An electrophotographic photosensitive member includes a support, an undercoat layer, a photosensitive layer, and a surface layer, the undercoat layer containing a binder resin and strontium titanate particles, the surface layer being a cured film of a composition containing at least one compound selected from a guanamine compound and a melamine compound, and a charge transport material having at least one substituent selected from —OH, —OCH3, —NH2, —SH, and —COOH.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: March 2, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ikuyo Kuroiwa, Kumiko Takizawa, Tsuyoshi Shimada, Kan Tanabe, Haruhiko Mitsuda, Takanori Ueno, Tatsuya Ikezue, Wataru Kitamura
  • Patent number: 10921723
    Abstract: Provided is an electrophotographic photosensitive member that can achieve both of abrasion resistance and the suppression of a ghost. The electrophotographic photosensitive member includes: a support; an undercoat layer; a charge-generating layer; and a charge-transporting layer, the undercoat layer, the charge-generating layer, and the charge-transporting layer being arranged in the stated order on the support, wherein the charge-transporting layer includes a charge-transporting substance, and a polymer containing a structure represented by the following general formula (1) and a structure represented by the following general formula (2), wherein the charge-generating layer includes a phthalocyanine crystal and a binder resin, and wherein the undercoat layer includes strontium titanate particles and a binder resin.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: February 16, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kumiko Takizawa, Tsuyoshi Shimada, Takanori Ueno, Ikuyo Kuroiwa, Haruhiko Mitsuda, Kan Tanabe, Tatsuya Ikezue
  • Patent number: 10908521
    Abstract: An electrophotographic photoconductor includes, in sequence, a support member; an undercoating layer containing a binder resin and an inorganic particle; and a photosensitive layer, wherein the binder resin of the undercoating layer is an alkyd-melamine resin, and the inorganic particle of the undercoating layer contains a strontium titanate particle.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: February 2, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Haruhiko Mitsuda, Tatsuya Ikezue, Kumiko Takizawa, Kan Tanabe, Ikuyo Kuroiwa, Takanori Ueno, Tsuyoshi Shimada
  • Patent number: 10838314
    Abstract: The electrophotographic photosensitive member includes an undercoat layer and a surface layer on or above a support in this order, in which the undercoat layer contains metal oxide particles and a specific binder resin, the surface layer contains a charge transporting substance, fluororesin particles, and a specific binder resin, an arithmetic average roughness Ra of a surface of the undercoat layer is 0.15 ?m or less, a refractive index (a) of the metal oxide particles and a refractive index (b) of the binder resin contained in the undercoat layer satisfy a specific relationship, and a refractive index (c) of the binder resin contained in the surface layer and a refractive index (d) of the fluororesin particles satisfy a specific relationship.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: November 17, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tatsuya Ikezue, Kumiko Takizawa, Ikuyo Kuroiwa, Kan Tanabe, Tsuyoshi Shimada, Haruhiko Mitsuda, Takanori Ueno
  • Patent number: 10732525
    Abstract: An electrophotographic apparatus includes an electrophotographic photosensitive member, a charging roller disposed so as to come into contact with the electrophotographic photosensitive member, and a charging device operable to apply only a DC voltage to charge the electrophotographic photosensitive member. The electrophotographic photosensitive member includes a support member, an undercoat layer over the support member, and a photosensitive layer over the undercoat layer and having a plurality of discrete recesses in the surface thereof. The undercoat layer contains zinc oxide particles and a binder resin. The undercoat layer has cavities therein, and the cavities account for 5.00% or less of the volume of the undercoat layer.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: August 4, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsuyoshi Shimada, Kan Tanabe, Haruhiko Mitsuda
  • Publication number: 20200225595
    Abstract: Provided is an electrophotographic photosensitive member in which the generation of a positive ghost image is suppressed under a low-temperature and low-humidity environment, and the occurrence of cracking is suppressed under a high-temperature and high-humidity environment. Also provided are a process cartridge mounted with the electrophotographic photosensitive member, and an electrophotographic apparatus including the process cartridge. The electrophotographic photosensitive member of the present disclosure is characterized in that an undercoat layer contains aluminum oxide particles and titanium oxide particles at a specific mass ratio.
    Type: Application
    Filed: March 27, 2020
    Publication date: July 16, 2020
    Inventors: Eileen Takeuchi, Kumiko Takizawa, Ikuyo Kuroiwa, Tsuyoshi Shimada, Wataru Kitamura
  • Patent number: 10705440
    Abstract: Provided is an electrophotographic photosensitive member that can suppress the generation of both an interference fringe and a streaky uneven part in a circumferential direction on an image. The generation of the interference fringe and the generation of the streaky uneven part in the circumferential direction on the image are suppressed by defining a length of a line-shaped groove of a support in a circumferential direction, and defining roughness parameters of a support in an axial direction.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: July 7, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takanori Ueno, Kumiko Takizawa, Ikuyo Kuroiwa, Tsuyoshi Shimada, Wataru Kitamura, Eileen Takeuchi
  • Publication number: 20200133147
    Abstract: Provided is an electrophotographic photosensitive member that can achieve both of abrasion resistance and the suppression of a ghost. The electrophotographic photosensitive member includes: a support; an undercoat layer; a charge-generating layer; and a charge-transporting layer, the undercoat layer, the charge-generating layer, and the charge-transporting layer being arranged in the stated order on the support, wherein the charge-transporting layer includes a charge-transporting substance, and a polymer containing a structure represented by the following general formula (1) and a structure represented by the following general formula (2), wherein the charge-generating layer includes a phthalocyanine crystal and a binder resin, and wherein the undercoat layer includes strontium titanate particles and a binder resin.
    Type: Application
    Filed: October 9, 2019
    Publication date: April 30, 2020
    Inventors: Kumiko Takizawa, Tsuyoshi Shimada, Takanori Ueno, Ikuyo Kuroiwa, Haruhiko Mitsuda, Kan Tanabe, Tatsuya Ikezue
  • Publication number: 20200133145
    Abstract: An electrophotographic photoconductor includes, in sequence, a support, an undercoat layer, a charge generation layer containing a charge generation material and a first binder resin, and a charge transport layer containing a charge transport material and a second binder resin. The charge generation material in the charge generation layer is chlorogallium phthalocyanine having diffraction peaks at Bragg angles (2?±0.2°) of 7.4°, 16.6°, 25.5°, and 28.3° in an X-ray diffraction pattern obtained by using Cu K-? radiation. The undercoat layer contains strontium titanate particles and a third binder resin.
    Type: Application
    Filed: October 18, 2019
    Publication date: April 30, 2020
    Inventors: Kan Tanabe, Tatsuya Ikezue, Kumiko Takizawa, Haruhiko Mitsuda, Ikuyo Kuroiwa, Takanori Ueno, Tsuyoshi Shimada
  • Publication number: 20200133149
    Abstract: The present disclosure provides an electrophotographic photosensitive member that can suppress a black spot and an exposure memory. The electrophotographic photosensitive member has a support, an undercoat layer and a photosensitive layer having a mono-layer structure in this order, wherein the undercoat layer contains a binder resin and strontium titanate particles; and the photosensitive layer having a mono-layer structure contains a binder resin, a charge generation material, a hole transport material and an electron transport material.
    Type: Application
    Filed: October 21, 2019
    Publication date: April 30, 2020
    Inventors: Takanori Ueno, Kumiko Takizawa, Kan Tanabe, Haruhiko Mitsuda, Ikuyo Kuroiwa, Tsuyoshi Shimada, Wataru Kitamura, Shinji Takagi, Tatsuya Ikezue